Low frequency intraseasonal oscillations in Indian Rainfall and outgoing longwave radiation

. In this study the interannual variations of the period and intensity of 30-40 days oscillations in monsoon rainfall rare examined by utilising daily rainfall data of 290 stations for a period of 80 years. Their relationship with the overall performance of the monsoon and ENSO phenomenon is also examined. Potential of these oscillations of about 40 days period in extended range forecasting of rainfall is examined by computing the cross-correlations between the rainfall and the OLR over certain key regions and the rainfall distribution over the whole country in subsequent few pentads. Finally concurrent correlations between the S-day OLR and rainfall are also studied.